- Can we predict the time it takes for the Portland Police Bureau to respond to calls?
- What can we say about the influence that race and wealth have on the reaction time of police?
12/3/2019
We combined two data sets: 2010 Census Bureau Data and 2012 Portland Police Bureau Data on Dispatched Calls and Portland Monthly income data. Our variables:
-Neighborhood
-Priority
-Percent of Population that's White
-Population Density
-Mean Income Our dependent variable: -Time in Queue
Approaches in Analysing Data:
- Bivariate Analysis
- PCA
-Priority of Call
-Low Racial Diversity
Attempted Models:
-Linear Regression
-Ridge Regression
-Lasso
-Regression Tree
-Boosted Tree
-Random Forest
Dataset
size
skew
variations among models
not standardized between cities
Best Model: GBM Boosted Random Forest
Strongest Predictor: Income (excluding call priority and type of call)
PPB Data: (https://www.portlandoregon.gov/police/76454.) Census Data: (https://www.portlandoregon.gov/civic/56897) Population and Economic Data: (https://www.pdxmonthly.com/articles/2016/4/1/real-estate-2016-the-city) Choropleth Data: https://www.portlandonline.com/portlandplan/index.cfm?c=51992